Sarah Isabelle Hunter, Cherokee

I am looking for any information I can get on Sarah Isabelle Hunter.She is full-blooded Cherokee, born Aug.1, 1859 in Marble Township, Arkansas and died Dec. 12, 1928 in Hot Springs, Arkansas.Her parents were Andrew McDowell Hunter and mother was Angeline Frances McKinley.They are not listed on the Dawes rolls or anywhere I can find.Any help would be great!!